Image overlayed five consecutive times on a live video


I m trying to overlay an image on a live video.I have used alpha blending method to overlay image on the video. On overlaying the image, it gets overlayed five times rather than one as expected.

Both frame data and the image data is taken as BYTE* for overlaying and displaying it.

The image used is a bitmap image.

The data (BYTE*) of both the video and the image is overlayed and the resultant is stored back in the variable of the video and den drawn on the picture control of vc++.

The video resolution is 640x480.
The image I m overlaying is 128x128.

The IDE used is visual studio professional.The code is developed using c++.

How do I overlay the bitmap image as a single image on the live video at a specific position.
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